基于海底地形的海底目標(biāo)物位置校正方法研究

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Position correction method for seabed targets based on seabed topography

YANGXiaodi12，CHUNMinghao12，LUO Xiaoqiao12，LIHuazhi1，2

1.CNPCEngineering TechnologyResearch&Development CompanyLimited，Tianjin3OO451，China

2.CNPCKeyLaboratoryof Marine Engineering，Tianjin3O0451，China

Abstract：Sidescansonarisanimportant tolformeasuringseabedtopographicfeatures.However，sincethebeamreceivedbythe side-scansonardoesnotcontainbeamngleinformation，theteraincanaffectthemeasuementintheunevenareasoftheseabedand leadtothepositiondeviationoftheseaedget，makingitdiulttodeterineteauatepsitionoftetargetAccodigtothe acousticnterpretationmthodofacousticadiation，tispaperproposesapositioncoectionmetodfortheseabedtargetsbasedon seabedtopography.First，theactualdistancebetweentheside-scansonartransducerandtheseabed targetiscalculated.Then，the correspondingwaterdepth profilesareextractedfromtheseabed terain.Thedistancebetweeneach waterdepthpointonthewater depthprofilesandtheside-scasonar transduceriscalculatedinsequene.Ifthedistanceisqualtoteactualonebeteentheside scansonatransducerandtheseabedtarget，thewaterdepthpointistheactualilluminationpointofteacousticwavesemittedbythe side-scansonar.Theextractedpostionisthetruepositionoftheseabedtarget.Suchacorrectionmethodcanimprovetheposition measurementaccuracyofseabedtargets，whichisofgeatsignificanceforimprovingthequalityofmarineenginering measurements.At the sametime，itprovidesacertainreferenceforsome marine engineering projects requiringhigh-precision measurements.

Keywords： side-scan sonar; deviation; acoustic radiation; correction

側(cè)掃聲吶是進(jìn)行海底地貌特征測量的重要工具，通過其獲取的聲吶圖譜可以識別海底的特征地形、海底障礙物、海底人工構(gòu)筑物等特征目標(biāo)，在海洋開發(fā)活動中具有不可替代的作用[-3]。（剩余5132字）